John J. Fleischhacker has been granted 23 US patents while listed as an inventor at Daig. The first was granted in 1985 and the most recent in December 1999. John J. Fleischhacker ranks #178,160 of 4,157,543 US inventors in our database (top 4.3%). Patent records list John J. Fleischhacker in Wayzata, MN, US.